Saturday

August 23, 2014

August 23, 2014

Posted by **Jonathan** on Thursday, November 10, 2011 at 7:15pm.

(a) What is its kinetic energy in joules?

(b) What is the bullet's kinetic energy if its speed is halved?

(c) What is the bullet's kinetic energy if its speed is doubled?

- physics -
**drwls**, Thursday, November 10, 2011 at 9:00pm(a)

(1/2) M V^2.

Make sure M is in kg and V is in m/s.

(b) (1/4) f what it is in (a)

(c) What do you think? What happens to V^2 if you double V?

**Related Questions**

physics - A 9.90-g bullet has a speed of 1.33 km/s. (a) What is its kinetic ...

physics - A 9.50 {\rm g} bullet has a speed of 1.40 {\rm km/s}. What is its ...

Physics - A pitcher claims he can throw a 0.157 kg baseball with as much ...

AP physics - A 1.60-g bullet, moving at 542 m/s, strikes a 0.249-kg piece of ...

physics - A gun is fired vertically into a 1.55 kg block of wood at rest ...

Physics - A 2.50g bullet, traveling at a speed of 425m/s, strikes the wooden ...

Physics !!!!! HELP PLEASE - A hand gun fires a 12.0 g bullet at a speed of 400 m...

Algebra II - The kinetic energy of a moving body is directly proportional to ...

Algebra II - The kinetic energy of a moving body is directly proportional to its...

Algebra II - The kinetic energy of a moving body is directly proportional to its...